Patents by Inventor Jeffrey E. Stahmann

Jeffrey E. Stahmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11071870
    Abstract: A ventricularly implantable medical device that includes a sensing module that is configured to gather information during a cardiac cycle and to identify a cardiac interval based at least on part on the gathered information. Control circuitry in the implantable medical device is configured to deliver a ventricular pacing therapy to a patient's heart, wherein the ventricular pacing therapy is time dependent, at least in part, on the identified cardiac interval.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: July 27, 2021
    Assignee: CARDIAC PACEMAKERS, INC.
    Inventors: Jeffrey E. Stahmann, Keith R. Maile, Krzysztof Z. Siejko, Allan Charles Shuros
  • Publication number: 20210204874
    Abstract: Systems and methods to determine an indication of patient dehydration are disclosed, including receiving first and second physiologic information of a patient, the first physiologic information including heart sound information of the patient and the second physiologic information different than the first physiologic information, and determining the indication of patient dehydration using the received first and second physiologic information.
    Type: Application
    Filed: December 8, 2020
    Publication date: July 8, 2021
    Inventors: Pramodsingh Hirasingh Thakur, Jeffrey E. Stahmann, Viktoria A. Averina, Deepa Mahajan, Bruce R. Forsyth
  • Patent number: 11052256
    Abstract: An implantable medical device (IMD) includes a heterogeneous housing configured to receive and store one or more components of the IMD. The housing includes an intrinsically non-conductive and non-magnetic base material and at least one dopant with a property of at least one of electrical conductance and magnetic permeability. The base material and the dopant form a first region of the housing including a first skin depth and a second region of the housing including a second skin depth different than the first skin depth.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: July 6, 2021
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Jeffrey E. Stahmann, Keith R. Maile, Moira B. Sweeney
  • Patent number: 11052258
    Abstract: A ventricularly implantable medical device that includes a sensing module that is configured to identify a search window of time within a cardiac cycle to search for an atrial artifact. Control circuitry in the ventricular implantable medical device is configured to deliver a ventricular pacing therapy to a patient's heart, wherein the ventricular pacing therapy is time dependent, at least in part, on an atrial event identified in the search window of time.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: July 6, 2021
    Assignee: CARDIAC PACEMAKERS, INC.
    Inventors: Keith R. Maile, Jeffrey E. Stahmann, Michael J. Kane, Benjamin J. Haasl, Krzysztof Z. Siejko, Allan Charles Shuros, William J. Linder, Brendan Early Koop
  • Patent number: 11020011
    Abstract: Arterial diastolic pressure of a patient can be estimated using ventricular pressure information of a heart of the patient and heart sound information of the heart of the patient, such as a timing of at least one of a first heart sound (S1) or a second heat sound (S2), in certain examples, adjusted by a respective correction factor.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: June 1, 2021
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Qi An, Pramodsingh Hirasingh Thakur, Michael J. Kane, Yinghong Yu, Jeffrey E. Stahmann
  • Publication number: 20210121683
    Abstract: An implantable antibacterial barrier device for an elongated medical device, the elongated medical device configured to extend from a first site, through a second site, to a third site. The implantable antibacterial barrier device includes a housing configured to be disposed at the first site, a working electrode configured to be disposed at the second site, and a reference electrode configured to be disposed at the first site. The housing includes barrier circuitry. The working electrode electrically is coupled to the barrier circuitry. The reference electrode is electrically coupled to the barrier circuitry. The barrier circuitry is configured to selectively maintain the working electrode at a negative electrical potential relative to the reference electrode to form an antibacterial barrier.
    Type: Application
    Filed: October 21, 2020
    Publication date: April 29, 2021
    Inventors: Jeffrey E. Stahmann, Keith R. Maile, Danielle Frankson, Craig M. Stolen, David J. Ternes
  • Patent number: 10980454
    Abstract: Systems and methods to determine presence of an analyte using an implantable medical device are disclosed. In an embodiment, a medical system includes an implantable medical device, a light source, an optical sensor and a processor. The implantable medical device includes an indicator tag, which is responsive to an analyte. The light source is configured to emit light onto the indicator tag, where the emitted light comprises at least one wavelength of light, and where the indicator tag emanates light, in response to the emitted light, that corresponds to whether the indicator tag is exposed the analyte. The optical sensor is configured to receive at least a portion of the emanated light, which includes at least one wavelength of light. And, the processor is configured to determine whether the indicator tag is exposed to the analyte based on the received light.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: April 20, 2021
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Michael J. Kane, Keith R. Maile, Jeffrey E. Stahmann
  • Patent number: 10946202
    Abstract: Methods and devices for testing and configuring implantable medical device systems. A first medical device and a second medical device communicate with one another using test signals configured to provide data related to the quality of the communication signal to facilitate optimization of the communication approach. Some methods may be performed during surgery to implant one of the medical devices to ensure adequate communication availability.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: March 16, 2021
    Assignee: CARDIAC PACEMAKERS, INC.
    Inventors: Keith R. Maile, Brendan E. Koop, Brian L. Schmidt, Michael J. Kane, Jacob M. Ludwig, Jeffrey E. Stahmann, Lance E. Juffer
  • Patent number: 10918858
    Abstract: An Implantable Medical Device (IMD) configured to be implantable in a ventricle of a patient's heart may include a housing, a first electrode secured relative to the housing, a second electrode secured relative to the housing, the second electrode spaced from the first electrode, and circuitry in the housing operatively coupled to the first electrode and the second electrode. The circuitry may be configured to identify a measure of impedance between the first electrode and the second electrode at each of a plurality of times during a cardiac cycle. Each measure of impedance may represent a measure of volume of the ventricle in which the IMD is implanted. In some cases, the circuitry may generate a pacing pulse, the timing of which is based at least in part on the measure of volume of the ventricle at two or more of the plurality of times during the cardiac cycle.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: February 16, 2021
    Assignee: CARDIAC PACEMAKERS, INC.
    Inventors: Qi An, Jeffrey E. Stahmann, Yinghong Yu, Pramodsingh Hirasingh Thakur, Michael J. Kane, Keith R. Maile
  • Patent number: 10912943
    Abstract: Systems and methods for communicating between medical devices. In one example, an implantable medical device comprising may comprise one or more electrodes and a controller coupled to the electrodes. The controller may be configured to receive a first communication pulse at a first communication pulse time and a second communication pulse at a second communication pulse time via the one or more electrodes. The controller may further be configured to identify one of three or more symbols based at least in part on the time difference between the first communication pulse time and the second communication pulse time.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: February 9, 2021
    Assignee: CARDIAC PACEMAKERS, INC.
    Inventors: Keith R. Maile, Michael J. Kane, Paul Huelskamp, Lance Eric Juffer, Jeffrey E. Stahmann
  • Patent number: 10894163
    Abstract: Methods, systems and devices for providing cardiac resynchronization therapy (CRT) to a patient using a leadless cardiac pacemaker (LCP) implanted in or proximate the left ventricle of a patient. A setup phase is used to establish parameters in the therapy delivery. In operation, the method and/or device will sense at least one non-paced cardiac cycle to determine a native R-R interval, and then delivers a synchronization pace at an interval less than the native R-R interval followed by a plurality of pace therapies delivered at the R-R interval or a modification thereof.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: January 19, 2021
    Assignee: CARDIAC PACEMAKERS, INC.
    Inventor: Jeffrey E. Stahmann
  • Patent number: 10888702
    Abstract: An interrogation system for a medical device includes a memory storing a diagnostic algorithm, a processor configured to run the diagnostic algorithm, and a communication module configured to facilitate data transfer between the interrogation system and the medical device. The diagnostic algorithm is configured to reach a diagnostic conclusion based on data from the medical device. The diagnostic algorithm is configured to iteratively interrogate the medical device for the data from the medical device until the diagnostic algorithm reaches the diagnostic conclusion, each iterative interrogation requesting additional data as compared to prior iterations. The communication module is configured to receive the additional data from the medical device in response to each iterative interrogation. The diagnostic algorithm is further configured to store an indication of the diagnostic conclusion within the memory.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: January 12, 2021
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Jeffrey E. Stahmann, Howard D. Simms, Jr.
  • Patent number: 10881869
    Abstract: Near-field energy transmitters for charging a rechargeable power source of an implantable medical device (IMD). In some cases, the transmitter may include an output driver that may drive a transmit coil such that near-field energy is transmitted to the IMD at a determined frequency. In some cases, the IMD may include a receiving coil that may capture the near-field energy and then convert the near-field energy into electrical energy that may be used to recharge the rechargeable power source. Since the rechargeable power source does not have to maintain sufficient energy stores in a single charge for the entire expected life of the IMD, the power source itself and thus the IMD may be made smaller while still meeting device longevity requirements.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: January 5, 2021
    Assignee: CARDIAC PACEMAKERS, INC.
    Inventors: Keith R. Maile, William J. Linder, Michael J. Kane, Jeffrey E. Stahmann, Jacob M. Ludwig, Brendan Early Koop, Daniel Joseph Landherr, Greg Paul Carpenter
  • Patent number: 10874861
    Abstract: A ventricular implantable medical device that is configured to detect an atrial timing fiducial from the ventricle. The ventricular implantable medical is configured to deliver a ventricular pacing therapy to the ventricle based on the detected atrial timing fiducial. If the ventricular implantable medical device temporarily fails to detect atrial activity because of noise, posture, patient activity or for any other reason, an atrial implantable medical device may be configured to communicate atrial events to the ventricular implantable medical device and the ventricular implantable medical device may synchronize the ventricular pacing therapy with the atrium activity based on those communications.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: December 29, 2020
    Assignee: CARDIAC PACEMAKERS, INC.
    Inventors: Brendan Early Koop, Jeffrey E. Stahmann, Allan Charles Shuros, Keith R. Maile, Benjamin J. Haasl
  • Patent number: 10874860
    Abstract: A leadless cardiac pacemaker (LCP) is configured to sense cardiac activity and to pace a patient's heart and is disposable within a ventricle of the patient's heart. The LCP MAY include a housing, a first electrode and a second electrode that are secured relative to the housing and are spaced apart. A controller is disposed within the housing and is operably coupled to the first electrode and the second electrode such that the controller is capable of receiving, via the first electrode and the second electrode, electrical cardiac signals of the heart. The LCP may include a pressure sensor and/or an accelerometer. The controller may determine a pace time within a cardiac cycle based at least in part upon an indication of metabolic demand.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: December 29, 2020
    Assignee: CARDIAC PACEMAKERS, INC.
    Inventors: Qi An, Michael J. Kane, Yinghong Yu, Jeffrey E. Stahmann, Pramodsingh Hirasingh Thakur, Keith R. Maile
  • Patent number: 10864378
    Abstract: Regulating cardiac activity may include pacing the patient's heart at a starting pacing rate and instigating an intrinsic heart beat search algorithm that includes pacing at a reduced rate for a period of time and capturing electrical signals representative of cardiac electrical activity while pacing at the reduced rate in order to determine a presence or absence of intrinsic heart beats. If intrinsic heart beats are not detected, the heart may be paced at a further reduced rate for a period of time. If intrinsic beats are detected, the heart may be paced again at the starting pacing rate. This may continue until intrinsic heart beats are detected or until a lower search rate limit is reached. Diagnostic data may be collected at each stage and transmitted to a display device for analysis by a physician or the like.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: December 15, 2020
    Assignee: CARDIAC PACEMAKERS, INC.
    Inventors: David A. Casavant, Jeffrey E. Stahmann, Carolina Villarreal, James O. Gilkerson, Deepa Mahajan, Paul Richard Holleran
  • Patent number: 10849568
    Abstract: Systems and methods for monitoring patient for syncope are discussed. A syncope monitor system can detect a precipitating event associated with a syncope onset, and acquire hemodynamic data in response to the detection of the precipitating event. A syncope analyzer circuit may generate temporal profiles of one or more hemodynamic parameters using the hemodynamic data. The syncope analyzer may use the temporal profiles to detect a syncopal event and to classify the syncopal event into one of a plurality of syncope categories. The detection and classification information may be output to a user or a process.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: December 1, 2020
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Qi An, Pramodsingh Hirasingh Thakur, Amy Jean Brisben, Jeffrey E. Stahmann, David J. Ternes
  • Patent number: 10849545
    Abstract: Embodiments herein include systems and methods for detecting, predicting and/or assessing acute kidney injury. In an embodiment, a monitoring system to detect acute kidney injury is included. The monitoring system can include a sensor circuit configured to collect renal data including at least one of systemic renal data, direct renal data, urinary tract data, and renal-relevant extracorporeal data. The monitoring system can also include a memory circuit to store collected renal data, an evaluation circuit to assess renal status, and a telemetry circuit. The evaluation circuit can determine whether acute kidney injury has occurred or is likely to occur by comparing the renal data to at least one of threshold values, personal historical values, patient population values and patterns indicative of acute kidney injury. The evaluation circuit can initiate a warning notification if acute kidney injury has occurred or is likely to occur. Other embodiments are also included herein.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: December 1, 2020
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Jeffrey E. Stahmann, Michael John Kane, Pramodsingh Hirasingh Thakur, Ramesh Wariar
  • Patent number: 10835751
    Abstract: Intermittent delivery of ventricular pacing pulses synchronized to occur during an atrial diastole time period can be used to provide atrial stretch therapy and augment the production and release of atrial natriuretic hormone.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: November 17, 2020
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Jeffrey E. Stahmann, Ramesh Wariar, Stephen B. Ruble
  • Patent number: 10799187
    Abstract: Systems and methods for monitoring patients with respiratory diseases are described. A system may include a sensor circuit to sense a respiration signal and at least one hemodynamic signal. The system may detect a specified respiratory phase from the respiration signal, and generate from the hemodynamic signal one or more signal metrics that are correlative to at least one of a systolic blood pressure, a blood volume, or a cardiac dimension. The system may detect a restrictive or obstructive respiratory condition when the hemodynamic signal metric indicates hemodynamic deterioration during a specified respiratory phase. The system may additionally classify the detected restrictive or obstructive respiratory condition into one of two or more categories, and deliver a therapy based on the detection or the classification.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: October 13, 2020
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Pramodsingh Hirasingh Thakur, Jeffrey E. Stahmann, Michael J. Kane, Bin Mi, Ron A. Balczewski, Keith R. Maile